This special looks back at Watergate, which changed politics and the media forever and which is now the etymological culprit behind hundreds of “-gate” scandals. Produced by Robert Redford (pictured), the two-hour documentary also looks at the movie that Watergate inspired, “All the President’s Men.” There is footage of Richard Nixon as he prepares his resignation speech, as well as a conversation with Redford and Dustin Hoffman, who say they memorized each other’s lines so they could finish each other’s sentences.

This three-part PBS series is about four women who spent World War II deciphering German codes. A decade later, they reunite to help solve a string of murders, despite resistance and condescension by the police force. Anna Maxwell Martin, so quietly compelling in “Bleak House” as Esther Summerson, is the star, along with Julie Graham, Rachael Stirling, and Sophie Rundle (pictured). Rundle, by the way, was in Matt LeBlanc’s “Episodes.”